SUPER177 NO FURTHER A MYSTERY

I would undoubtedly consider them. There's not cause that they would not perform just fantastic inside your Beeman. I've experienced excellent luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and so forth.). I'd try out a tin and see how your Grizzly likes them as all guns appear to have their most loved pellets.The RWS Superd